A DHCP server is a program to hand out Dynamic Host Configuration Protocol leases.

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Tomato router with separate DHCP server

I currently have a Netgear R7000 (running Tomato) acting as my main router (DHCP and DNS) and access point. Because of how my house is laid out, the modem and router are apart from each other (...
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29 views

Use DHCP server to send custom data to DHCP client

Is there a way for DHCP server to send some custom data along with other configuration that it sends to DHCP client while assigning IP address to client? I tried using isc-dhcp-server/dnsmasq as ...
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21 views

linux - using built-in dnsmasq's tftp server transfer sample file to dhcp client

When dhcp client contacts dnsmasq's dhcp server to assign ip address, is there a way to transfer some file to dhcp client using built-in tftp server? dnsmasq.conf file contains following tftp related ...
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11 views

isc-dhcp-server behavior when duplicate REQUESTs

I hope you can help me understanding how to handle the following problem. MY OBJECTIVE I have a network with several segments and one DHCP server. Each segment has a network element that I want to ...
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2answers
28 views

Running a DHCP server without conflict

I have a single chip computer running ubuntu on it and I want to run a dhcp server on it to give addresses to any machine connected directly to it. Since it is a portable computer, I regularly connect ...
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24 views

Setting up DHCP Server on Win2012 Server inside Virtual Box the windows 7 client will not receive an ip address from the dhcp server ?,

I have setup virtualbox on my laptop. Now, within virtual box, I have windows server 2012 R2 Datacenter Running, and also within virtual box I have Windows 7 Ultimate running. Now, I am simply trying ...
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1answer
5k views

How do I use a single wireless adapter for both an access point and client on raspberry pi?

I have been able to create a wireless access point (on my raspberry pi) using a usb wifi dongle using hostapd on wlan0. What I would like to be able to do is have the access point be on some virtual ...
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1answer
32 views

DHCP Offer already sent to my local IP address

I entered these commands into Terminal to release my current local IP address and allocate a new one: sudo ipconfig set en0 BOOTP sudo ipconfig set en0 DHCP This is the screenshot of DHCP packets ...
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1answer
21 views

DHCP messages when connecting to home WI-Fi

I inspected DHCP packets with wireshark. Expected result was to see 4 packets, namely DHCP discover, DHCP offer, DHCP request and DHCP ACK. I only see 3 as indicated by the picture. DHCP discover and ...
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21 views

Android is not getting dhcp lease but server offers one

Android is not getting dhcp lease but server offers one. My Linux Mint 17 desktop gets an IP via DHCP (wired network). Do you habe any hints where the problem is possible lying? Where and how should I ...
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1answer
46 views

Old DHCP IP showing in ipconfig /all

I recently migrated a 2003 DHCP database to a 2008 r2. The newly configured workstation will pick up the right IP settings including DNS, DHCP server, and gateway but the old workstations will still ...
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1answer
1k views

dhcp6 server config problems

I'm trying to configure an IPv6 DHCP server in gentoo. So far: /etc/dhcp/dhcpd6.conf - subnet snippet: subnet6 2001:db8:21e:101::/64 { range6 2001:db8:21e:101::6 2001:db8:21e:101::100; ...
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1answer
2k views

How to create a wifi hotspot in Windows 7 + redirection to a local webpage?

Before diving into the question, some quick background information: I have built a small experiment which works together with a computer running Windows 7. On this computer, there is a small webserver ...
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1answer
26 views

Can you have static leases without DHCP?

Is it possible to assign IPs to only those on a static lease list, but not give dynamic IPs to unknown MACs? It seems DHCP is required to have a static lease list?
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65 views

Windows Server 2012 r2 DHCP not serving addresses

Yesterday I encoutered a DHCP problem. After windows update and restart, my dhcp won't serve any new IP addresses. The ones wich has been sent before are working but no new IP-s. I tried restarting ...
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22 views

DHCP-Enabled Router Sometimes Won't Talk to Host with Static IP

I have a Windows 7 host connected to a router running DD-WRT. The router is running a DHCP server. For reasons I don't need to detail here, I have set a static IP on the host, as opposed to ...
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28 views

udhcpd.conf for windows client

I have a embedded board running busybox that I want to use as a wireless file server. It does not connect to the internet. Using hostapd udhcpd and httpd it worked fine with ubuntu 14.04 and 12.04 ...
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1answer
1k views

Installing DHCP3 Server

I am having trouble installing dhcp3-server on Kali Linux 2.0. I keep getting the following error Depends: isc-dhcp-common (= 4.2.2.dfsg.1-5+deb70u6) but 4.3.1-6 is to be installed Does anyone know ...
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1answer
114 views

Why isn't my DHCP server working?

I am trying to setup a DHCP sever with my Raspberry pi, but the service isc-dhcp-server cannot be restarted. Why isn't the service being restarted? ifconfig eth0 Link encap:Ethernet HWaddr X ...
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1answer
437 views

What's better RADVD or DHCPv6 for local network with IPv6?

today I got a new router and now I want to enable IPv6 on my network. But the thing is I don't know what the better option is since TP-Link gives me two ways to get IPv6 on my network. The first ...
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1answer
17k views

Running two DHCP Servers in the same network

I have connected my raspberry pi with a wireless access point and would like to run a DHCP Server on the RPi to assign the IP and gateway correctly. This is because the RPi serves as a gateway to a ...
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49 views

Upgrading from isc-dhcpd-4.1.1-P1 to isc-dhcpd-4.3.3-P1

I am looking to update my DHCP servers with failover associations configured, running isc-dhcpd-4.1.1-P1 to isc-dhcpd-4.3.3.3-P1. I found documentation on ISC's site when upgrading from 3.X to 4.X ...
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3answers
122k views

How to find my DHCP server IP address via a command prompt in Windows?

Linux has easy commands to find the DHCP server IP address via a command prompt. Is there anything for Windows?
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2answers
965 views

detect DHCP server on a wired network

On Windows 7, how can I check if there is a DHCP server ruling the LAN on which my computer is running ? How to detect its IP address ?
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50 views

DHCP Server and WINS Server Sharing Same IP

I have been trying for a couple of weeks now on an Ubuntu system to try and run the machine as both a WINS server and a DHCP server - is there anything that would stop this from working? I just don't ...
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37 views

Setting DHCP server in Linux centos

I am using windows 8.1 I have just finished installing dhcp server. I type service dhcpd configtest, and responds; syntax ok when type "service dhcpd start" it responds by "starting dhcpd : [FAILED]...
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122 views

Is it a common practice for a DHCP server to send a hostname to a client?

I've been running a custom staticDHCPd (Python) DHCP server for a couple of years, and in the configuration file I've always added the hostname along with the other data, here's an example ; ---------...
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118 views

Windows DHCP server with multiple subnets

I have a Win 2012R2 DHCP Server in one physical network.(All clients have reservations) Now I have to add more clients and therefore I ran out of IP addresses.(Note this are Class B addresses, without ...
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1answer
65 views

How to Create new scope under super scope in windows using command?

AM trying to create new scope under my exissting superscope. like below +hostname ++IPV4 +++Superscopename ++++newscopes using below command netsh dhcp server add scope <new_scope> <subnet&...
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1answer
380 views

Using dnsmasq with KVM

I just installed KVM on a CentOS 7 x64 minimal installation version at home. And I got a problem when the guest is trying to get an IP from the internal DHCP server from KVM (dnsmasq). I already have ...
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1answer
98 views

isc-dhcpd sanity check fail even though everything looks right

I have a machine in freebsd 8.1 and I am failing to do service isc-dhcpd start it keeps saying "Configuration file sanity check failed" Hint: I copy the /usr/local.rc.d/isc-dhcpd and /usr/local/sbin/...
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Which server is selected by the client if it receives Offer from 2 DHCP servers at a time?

Which server's IP address is selected if the client receives the Offer from 2 DHCP servers (on different subnet) at a time? I searched Google and the answer I got is: which Offer comes first will be ...
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59 views

OpenWRT: Set individual DHCP credentials for different clients?

Consider a small network of clients and a router running OpenWRT. All clients are getting their IP informations automatically from the DHCP server of the router. The devices in the network should all ...
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1answer
381 views

Android dhcp assigning bogus dns server

I've been having problems with Android devices and DNS lookups on my WiFi network, so I've done some digging and found that android is assigning what appears to be a random link-local ipv6 address in ...
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1answer
267 views

Creating a DHCP server on a Virtual Machine

i have a Windows 8 machine with PFsense in virtual box. The host have the following nics: Wi-fi Ethernet I have 3 network adaptares on the virtual Machine: Wan (Bridged adapter through host's wi-...
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82 views

Both Public and Private DNS not working. How make it work properly without any conflict

I setup private network so I installed DHCP in one of my server. Now my public network DNS is not working. How can I setup DNS for private network with conflict the public network DNS? DHCP Setup. ...
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2answers
38 views

Reproducible DHCP Addreses

I have a microcontroller based device with a bootloader and an application. The device has one Ethernet adapter. The bootloader uses IP/UDP to flash the application image. The application has a full ...
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71 views

Can I seed what DHCP options are offered on my network connection WITHOUT server access

When you get a DHCP address from a DHCP server it comes with options. I want to see all of the options set. Yes, I know that I could bug one of our extremely busy sysadmins and get them listed off to ...
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3answers
657 views

Is it possible to create network shares with multiple DHCP servers running on the same network?

I am planning on installing Fedora and using Amahi as a Media Server/NAS in my house. I currently have a network with 2 wireless routers, one acts as the DHCP server and the other is just an AP. The ...
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2answers
670 views

How does DHCP distribute or choose which IP to give within the scope?

There is something strange happening with my OpenWrt firmware. The scope for my DHCP is 100 to 250 in the 192.168.1.* range but the first IP it gave is 192.168.1.189. Is there any reason it started ...
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24 views

dhcpd3 not reusing IP for mac

I have an ip range with two ip-addresses defined as follows in my dhcpd.conf: subnet 192.168.1.0 netmask 255.255.255.128 { range 192.168.1.10 192.168.1.11; default-lease-time 600; ...
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1answer
88 views

Unable to Set up DHCP and TFTP on Ubuntu

I want to transfer my kernel image to beaglebone black, and the guide mentions that I should have already set up DHCP and tftp on the host machine. I have set up the TFTP using: sudo apt-get ...
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1answer
2k views

IPV6 DHCP server configuration

I'm new to IPV6. I'm trying to configure IPV6 server on my Linux VM using isc dhcp. we have the following content dhcpd6.conf file default-lease-time 600; max-lease-time 7200; log-facility local7; ...
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1answer
934 views

DHCP REQUEST is getting no response

I am new to dhcp world. I have a device with dhcp client which does not acquired ip address some times. When i started analyzing the dhcp frames through Wireshark i get following two types of frames. ...
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2answers
620 views

Running DHCP for ipv4 and ipv6 on different servers in the same network

I have a network where ipv4 addresses are assigned via DHCP on the router. The router, however, is capable of routing ipv6 but does not support ipv6 DHCP. Would running 2 DHCP servers (one for ipv4 ...
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1answer
2k views

Failed to Start DHCP in Linux Redhat, Need Help ASAP

I tried to configure /etc/dhcp/dhcpd.conf file in Linux but it failed as static addressing. How do I fix it? Am I missing any data and is it accurate? I need help. Below is screenshot of my contents ...
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2answers
659 views

router dhcp config for pxe boot

I want to set up pxe/tftp server in my network. I already have a dhcp server on my isp router wich has dhcp option 60 and dhcp option 240. I nee to know if can i set it up in order to lease pxe info (...
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2answers
312 views

How to resolve physical device for home LAN's 10.0.1.1?

Main question How can I find out the physical device corresponding to 10.0.1.1 (in my home LAN)? (I tried dig, which gave no physical device info, and nslookup and host, both of which failed. BTW,...
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2answers
506 views

How the WLAN interface of a home router do to reply DHCP requests just at connection time?

Using VirtualBox I created a VM with the following VirtualBox Network Settings: Attached to: Bridged Adapter Name: wlan0 ... .. . wlan0 is the wireless interface of my laptop, which is connected to ...
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2answers
1k views

How to disable DHCP on Netgear CG3700EMR-1CMNDS?

I just got a Netgear CG3700EMR-1CMNDS from my ISP. How do I disable its DHCP server? I'm unable to find the setting.